Coal-oil burner



May 19, 1925.

. 1,538,723 C. H. MILLER GOAL OIL BURNER Filed Feb. 16. 1923 4 SheetS-Sheet 1 Z'Zler.

May 19,1925. c. H. MILLER coALoIL BURNER Filed Feb. 16. 1923 '4Sheets-Sheet 2 gnvmkoe C. H. MILLER con. OIL BURNER Filed Feb.

May 19, 1925.

1a. 192:: 4 Sheets-Sheet 4.

37mm GHM'Z/en Patented May 19, 1925.

UNITED STATES CHARLES H. MILLER, F HUTVT'INGTION, INDIE-ANA.

-GOAL-OIL. BURNER.

Application filed February 16, 1923. Serial N0. 619,452.

To all whom it may concern Be it known that Cumulus H. MILLER says thathe is a citizen of. the United States, residing at I-lunt-ington, in thecounty of l-luntington and State of Indiana, has in vented certain newand useful Improvements in Coal-Oil Burners, of whichthe following is aspecification. y

This invention relates to liquid fuel burners, and particularly to an.oil burner provided with means for vaporizing the fuel before itscombination with the air.

One particular feature of my invention resides in the arrangement withinthe main casing of the burner, of a draft-check or air control member,the object of which is to divide the air supplied to the mixing cha1nherinto two parts, one of which is for the purpose of supplying. the usualnecessary amount of air to provide a combustible mixture, while theother. is for the purpose of impinging upon the gasifi'ed mixture andcentering it upon. a deflecting plate over the burner.

Another feature of importance resides in the particular arrangement ofthe generating chamber whereby carbonizing thereof is materiallyavoided, and by which arrangement a maximum degree of heating andthereby vaporization is obtained.

These and many other features, and advantages will be apparent to thosefamiliar with the construction and operation of hydrocarbon fuelburners.

In the accompanying drawings,

Figure 1 is a side elevation of my com plete burner and fuel. supplytank;

Figure 2 is a side elevation of the burner, illustrating its applicationto a stove;

Figure 3 is a central vertical sectional view of the burner;

Figure 4 is a top planv View of'the burner;

Figure 5 is a horizontal section as seen on the line 55 of Figure 3.

Figure 6 is a vertical section as seen on the line 6-6 of Figure 3;

Figure 7 is a detail sectional view of the fuel control valve;

Figure 8 is an enlarged detail View of the fuel tank supporting post,and" Figure 9 is a detail view of the flame deflecting plate.

Referring now more particularly to the drawings by numerals ofreference, 2 designates the burner base, comprising a verticalcylindrical casing or drum open at its bottom as at l and having at itsupper end an annular reduced head 6, the closureplate 8 of which isprovided with a centrally arrznged circular flame and gas passage 5. Thestructure as defined may be formed integrally, or if desired, the head 6may be constituted as a separable unit.

The burner base, is adapted for use with the usual cook or heating stoveor furnace, and as so employed, will be'seated upon the grate 9 thereofand a packing 10 of ashes or dirt piled around the lower portion of thebase throughout an area such as will effectually prevent draft passingthrough any part of the stove grate except that portion covered by thebase.

Supported upon radial arms 11 riveted in the side walls of the base 2,and concentrically arranged with respect to the latter, is aninnercup-shaped draft control or check member 12, open at its upper end,while the bottom 14 thereof is provided with a central draft opening 16of suitable area.

The vapor nozzle comprises a pipe18 passing diametrically through theupper annular reduced head 6, by passing, through openings in thevertical walls thereof, said pipe having an upwardly directed jetopening 20 which is arranged in the axis of the burner base and thecentrally located gas end of the pipeis closed by a screw cap 21. Theupper edge of the wall of the cupshaped member 12 atdiametricallyopposite points is provided with recesses in which seatsthe pipe 18.

Supported upon an overhanging arm 23 on a bracket 22 carried by the head6 and offset from the vertical axisthereof is a circular deflectingplate 24. The said plate 24 is arranged above and coaxial with the gaspassage 5 and is adapted to receive the impact of the flame which issuestherefrom.

The feed end of the vaporpipe 18 is connected with a retort orvaporizing chamber 27' which includes a vertical side tube and ahorizontal tube 26, the latter being arranged laterally of the axis ofthe base and head, so that no portion thereof lies directly thereover.By arranging the retort tubes, I avoid carbonizing or" smutting them, itbeing well known that a carbon deposit on the tube acts as an insulatoragainst heat and detracts from the eiiicient operation of the burner.

The tubes are connected to one another passage 5 and draft opening 16'.The dead llu and to the pipe 18 by elbow couplings 28 and 30respectively.

The fuel end of the retort or vapor generating tube 26, is connected byan elbow coupling 31 with a liquid fuel supply pipe 32, in the line ofwhich, and elevated a considerable distance above the burners and to therear thereof, is interposed a regulating needle valve 34, in a valvecasing 35, shown specifically in Figure 7, said valve being constructedto control the fuel to the burner to a fine degree of adjustment. It isobvious that through this valve, the proper amount of fuel will bepermitted to flow to the generating chamber or retort and upon saidamount is dependent the pressure at the jet opening and the mixingchamber 36, and the resultant operation of the burner.

At the junction of the generating tube 26 with the fuel supply pipe 32is arranged a vertical shield plate 60 which avoids the pre liminaryheating of said fuel supply pipe.

Fuel for supplying the burner is carried by an elevated gravity feedtank 38, supported upon a post 39, having telescopic and adjustablerelation with the standard 40 preferably supported or mounted upon thefloor although it is obvious that the tank may be supported upon a shelfor bracket, even at a point a distance from the burner. The post 39supports the tank 38 through an intermediate multi-way coupling 42 inwhich is arranged the main feed control valve 43 and which also ispreferably of the needle-valve type which permits of finer degree ofadjustment.

The burner is started by igniting a body of fuel absorbed asbestos 44,in a starting cup 46, slidably arranged on a transverse rod 48 in thelower portion of the burner base, a manipulating handle 50 beingsuitably connected therewith.

In the operation of my burner, the burner being started as is usual withthe starting cup, air to be supplied to the vapor in the mixing chamber36, passes upwardly through the base 2 and upon reaching the draftcontrol or check cup-member, divides, a greater portion passing upwardlythrough the annular space defined by the vertical walls of said cup andsaid reduced head, while aminor portion passes axially through thecentral draft opening 16 and impinging on the flame just above the jetopening 20 acts as a means for centering it with respect to thedeflector plate 24, said minor portion of air, of course, mixing withthe flame, and aiding in supporting combustion. The flame is deflectedby the plate 24, outwardly in an annular film, within the area of thegrgatest heat of which lies the generating tu e.

Having described my invention, what I claim as new is the following 1.An oil burner of the class described comprising a cylindrical basemember open at its bottom and having a head member formed on the topthereof, said head member having a central circular opening therein, adraft cheek member centrally supported in the upper portion of said basemember below the head, said draft check member being cup-shaped indesign and having a central opening in its bottom concentric with theopening in the top ofthe head, a fuel supply pipe, :1. vaporizing pipeconnected to the latter and extending diametrically through the head ofsaid base member, said vaporizing pipe having a jet formed in the topthereof concentric with the aforesaid openings, the portion of thedevice surrounded by said head member above the vapor pipe constitutinga generating chamber, and a flame deflector adjustably supported on thebase member and spaced above the head thereof, adapted to be positionedover the opening in said head,as and for the purposes described.

2. An oil burner of the class described comprising a cylindrical basemember open at its bottom and having a head member formed on the topthereof, said head member having a central circular opening therein, adraft check member centrally supported in the 11 per portion of saidbase member below the head, said draft check member being cup-shaped indesign and having a central opening in its bottom concentric with theopening in the top of the head, a fuel supply pipe, a vaporizing pipeconnected to the latter and extending diametrically through the head ofsaid base member, said vaporizing pipe having a jet formed in the topthereof concentric with the aforesaid openings, the portion of thedevice surrounded by said head member above the vapor pipe constitutinga generating chamber, a starting member including a cup-shapedreceptacle pivotally supported within said base member adjacent thebottom thereof and a handle for manually actuating the same, and a flamedeflector supported above the head of the base member adapted forposition over the opening in the top thereof, as and for the purposesdescribed.

In testimony whereof CHARLES H. MILLER aflixes his signature.

CHARLES H. MILLER.

